 2016 Microchip Technology Inc.

DS20005629A-page 1

HV5812

Features

• Operating Voltage of up to 80V

• High-speed Source Driver

• 5V CMOS Logic Circuitry

• Up to 5 MHz Data Input Rate

• Excellent Noise Immunity

• Flexible High-voltage Supplies

Applications

• Display Driver

General Description

The HV5812 is a 20-channel serial-input vacuum

fluorescent display driver. It combines a 20-bit CMOS

shift register, data latches and control circuitry with

high-voltage MOSFET outputs. The HV5812 is

primarily designed for vacuum fluorescent displays.

The CMOS shift register and latches allow direct

interfacing with microprocessor-based systems. Data

input rates are typically over 5 MHz with 5V logic

supply. Especially useful for interdigit blanking, the

blanking input disables the output source drives and

turns on the sink drivers. Using with TTL may require

external pull-up resistors to ensure an input logic high.

Package Type

28-lead PDIP

(Top view)

See Table 2-1 for pin information.

28

1

1 28

4

26

1

28

28-lead PLCC

(Top view)

28-lead SOW

(Top view)

s

20-Channel Serial-Input Vacuum Fluorescent Display Driver for Anode or Grid